v1.16: sdk: Limited Borsh 0.9 support (Pubkey and helpers) (backport of #32511)

[mergify]

This is an automatic backport of pull request #32511 done by Mergify.
Cherry-pick of 8c14886 has failed:

On branch mergify/bp/v1.16/pr-32511
Your branch is up to date with 'origin/v1.16'.

You are currently cherry-picking commit 8c14886891.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   Cargo.lock
	modified:   program-runtime/src/compute_budget.rs
	modified:   programs/sbf/Cargo.lock
	modified:   runtime/src/cost_model.rs
	modified:   sdk/program/Cargo.toml
	modified:   sdk/program/src/borsh.rs
	new file:   sdk/program/src/borsh0_10.rs
	new file:   sdk/program/src/borsh0_9.rs
	modified:   sdk/program/src/lib.rs
	modified:   sdk/program/src/pubkey.rs
	modified:   sdk/program/src/stake/state.rs

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   sdk/src/lib.rs

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/github/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

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[codecov]

Codecov Report

Merging #32697 (356921a) into v1.16 (79c8bac) will decrease coverage by 0.1%.
The diff coverage is 74.6%.

@@            Coverage Diff            @@
##            v1.16   #32697     +/-   ##
=========================================
- Coverage    81.9%    81.9%   -0.1%     
=========================================
  Files         762      762             
  Lines      207816   207789     -27     
=========================================
- Hits       170387   170352     -35     
- Misses      37429    37437      +8